Al-Kāfi

Hadith 1004
worship
16ـ مُحَمَّدٌ عَنْ سَهْلِ بْنِ زِيَادٍ عَنِ النَّوْفَلِيِّ عَنِ السَّكُونِيِّ عَنْ جَعْفَرٍ عَنْ أَبِيهِ (عَلَيْهِ الْسَّلام) قَالَ قَالَ رَسُولُ الله (صلّى اللهُ عَلَيْهِ وَآلِه) لِكُلِّ شَيْ‏ءٍ وَجْهٌ وَوَجْهُ دِينِكُمُ الصَّلاَةُ فَلاَ يَشِينَنَّ أَحَدُكُمْ وَجْهَ دِينِهِ وَلِكُلِّ شَيْ‏ءٍ أَنْفٌ وَأَنْفُ الصَّلاَةِ التَّكْبِيرُ.
16. Muhammad has narrated from Sahl ibn Ziyad from al-Nawfaliy from al-Sakuniy from Ja‘far from his father who has said the following: “The Messenger of Allah has said, ‘Everything has a face. The face of your religion is Salah (prayer), no one of you, therefore, must deface his religion. Everything has a nose. The nose of Salah (prayer) is al-Takbir (saying, “Allah is greater than can be described”).”’
Source: Shaykh Muḥammad b. Yaʿqūb al-Kulaynī